Writing H2 Headlines with Line Breaks

davidshkim.com

I would like my Slider Title to appear as follows as a whole in H2 headline centred-aligned:

Hi, I’m David. I’m a
Digital Marketing Strategist
in Vancouver

Also, I would like to delete the red line appearing between the main title and subtitle. I would appreciate your help again. Thanks a lot!

Hi, I’m David. I’m a (font 55px)
Digital Marketing Specialist (font 70px)
in Vancouver (fonx 55px)

Duplicate thread with this: https://athemes.com/forums/topic/making-line-break-on-header-slider-title